Platinum, sapphire, ruby, emerald and diamond necklace-bracelet combination, Oscar Heyman & Brothers. Photo: Sotheby's.

Set with 34 square-cut sapphires graduating in size weighing 110.79 carats, spaced by alternating links set with 33 square-cut rubies weighing 4.70 carats, 33 square-cut emeralds weighing 3.63 carats, and 66 square-cut diamonds weighing 4.34 carats, length 17¾ inches, with maker's mark for Oscar Heyman & Brothers, numbered 85033; separates into five sections to adjust necklace length and for wear as a bracelet, lengths 7½, 3¾, 3¾, 2 7/8 and 1 3/8 inches; circa 1959. Estimation 50,000 — 70,000 USD 

Sotheby's. Important Jewels. New York | 24 sept. 2013 - http://www.sothebys.com